Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

18218981 (number)

18218981 is an odd 8-digits composite number following 18218980 and preceding 18218982. In scientific notation, it is written as 1.8218981 × 10^7. The sum of its digits is 38. It has a total of 3 prime factors and 8 positive divisors. There are 16513920 positive integers (up to 18218981) that are relatively prime to 18218981.

Interesting facts

18218981 has 8 divisors, whose sum is 19933824
The reverse of 18218981 is 18981281
Previous prime number is 367

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2

Name

Name	eighteen million two hundred eighteen thousand nine hundred eighty-one

Notation

Scientific notation	1.8218981 × 10^7
Engineering notation	1.8218981 × 10^6

Prime Factorization of 18218981

Prime Factorization 11 × 367 × 4513

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	18218981	Product of the distinct prime numbers

The prime factorization of 18218981 is 11 × 367 × 4513. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 9, 1, 39, 161, 229, 8843, 2364, 9201, 69637, 496345, 995930, 9425811, 4482540, 24198049, 68120300, 818889808, 626938887, 73347909, 4968302145

Basic calculations (n = 18218981)

Multiplication

n×y

n×2	36437962
n×3	54656943
n×4	72875924
n×5	91094905

Division

n÷y

n÷2	9109490.5
n÷3	6072993.6666667
n÷3	4554745.25
n÷5	3643796.2

Exponentiation

n^y

n²	331931268678361
n³	6.047449477357E+21
n⁴	1.1017836712643E+29
n⁵	2.0073375772874E+36

Nth Root

^y√n

²√n	4268.3698293377
³√n	263.13262261099
⁴√n	65.332762296857
⁵√n	28.320754322038

Divisors of 18218981

1, 11, 367, 4037, 4513, 49643, 1656271, 18218981

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-18218980	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	1	Returns the nth root of the product of n divisors
H	Harmonic Mean	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 18218981 can be divided by 8 positive divisors. The sum of these divisors (counting 18218981) is 1, the average is 0.125.

Base conversion 18218981

Base	System	Value
2	Binary	1000101011111111111100101
3	Ternary	1021021121202002
4	Quaternary	1011133333211
5	Quinary	14131001411
6	Senary	1450255045
8	Octal	105377745
10	Decimal	18218981
12	Duodecimal	6127485
16	Hexadecimal	115ffe5
20	Vigesimal	5dh791
36	Base36	auhut

Cryptographic Hash Functions

md5	3ab54161fce6bc095257aa0401968b6a
sha1	d3e0f7b3dbb3ba2cf3a8f5c98a10875af8fb3af8
sha256	7ad1b3a08178a9303090fbe8a4745c309eae8d1d31c9d85d65bf618c89789ae4
sha512	7b9dd01e0a2995a2579b0a5cb4bd6aff190e0db886007fa96853dd968f6eb0836443734ebf89055c7d2f3282a2c0c32f6ba793d0e45158b48167d09b044059ab
ripemd-160	a314ccf9700bdb66adbea0141aaac2a869c7e9a2

18218981 as geometric shapes

Circle

Radius = n

Diameter	36437962
Circumference	114473233.73098
Area	1.0427928351767E+15

Sphere

Radius = n

Volume	2.5331497134693E+22
Surface area	4.1711713407067E+15
Circumference	114473233.73098

Square

Length = n

Perimeter	72875924
Area	331931268678361
Diagonal	25765530.022818

Cube

Length = n

Surface area	1991587612070166
Volume	6.047449477357E+21
Space diagonal	31556200.754132

Equilateral Triangle

Length = n

Perimeter	54656943
Area	1.4373045549293E+14
Altitude	15778100.377066

Triangular Pyramid

Length = n

Surface area	1.4373045549293E+14
Volume	7.1269875572036E+20
Height	8588510.0076059